Waterproofing compound and process of manufacturing the same



Patented Apr. 6, 1926.

UNITED STATES PATENT OFFICE.

CLARENCE D. SHAIFER, OI KALAMAZOO, MICHIGAN, ASSIGNOR TO TEXTILE LEATHER & METAL PRESERVED CO. INC., 01 KALAMAZOO, MICHIGAN.

WATERPROOFING COMPOUND AND IROCESS OF MANUFACTURING T HE SAME.

1T0 Drawing.

To all whom it may concern:

Be it known that I, CLARENCE D. SHAFFER. a citizen of the United States, residing at Kalamazoo, county of Kalamazoo, State of Michigan, have invented certain new and useful Improvements in Waterproofing Compounds and Processes of Manufacturing the Same, of which the following is a specification.

This invention relates to improvements in Waterproofing compounds and the process of manufacturing the same.

The object of the invention is to produce by simple means an effective waterproofing compound that is easily applied and very durable in use.

Objects pertaining to details and economies will definitely appear from the detailed description to follow. I accomplish the objects of the invention b the means and process defined in the s eci cation. The invention is clearly defined 1n the claims.

As heretofore manufactured, the ingredients for waterproofing material similar to my invention have been subjected to strong heat, which has an undue and damaging effect on many of the ingredients, and is costly besides. I minimize the use of heat.

In carrying out my invention I take colophony, rosin, gum mastic or the like, 10 ounces, to whic I add 8 ounces of gasoline and heat until dissolved, and then add 18 ounces of cold gasoline, and cool the solution.

The second ingredient is paraflin 10 ounces, to which I add 64 ounces of gasoline, and heat the same sufficiently to melt and dissolve the paraflin.

The third ingredient consists of rubber cement, which is any high grade cement, 10 ounces, which I dilute by adding 10 ounces 3f giasoline to make the same very thin'and When the ingredients have cooled to pref- Applicatlon filed January 28, 1928. Serial No. 615,168.

erably substantially room temperature, I preferably add the colophony mixture to the dissolved parafiin mixture, thoroughly mix the same, and then add the dilute rubber cement, stirring and thoroughly mixing the whole. A very good waterproofing is made without the addition of rubber, but the rubber gives the same strong continuity and adds much to the durability, and it is very readily mixed in the manner indicated. Paraffin solution and rubber will make awaterproof of low resistance.

The waterproofing as here produced makes a,comparatively heavy coat and often more than is needed, and I dilute this mixture,

by simply adding gasoline, to such strength as will serve the purpose. The mixture very readily aterproofs leather, canvas, cloth or any fabric, and is of use in rust-proofing metal.

. By thoroughly dissolving these ingredicuts as I have indicated, I find that they may be very readily mixed cold.

The proportions may be widely varied over those that I have indicated.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:

' CLARENCE D. SHAFFER [1. 8.1 

